parse to int may throw exception

using System;
/*
from Lesson 4 of C# console programming tutorial series at following URL:
http://williammillerservices.com/windows-c-console-programming/
demonstrates potential run-time error in that user may fail to input
a value that is parseable to an integer
GitHub gist -> https://gist.github.com/kyrathasoft/2bc097e9e9a465f7d4388e46ed8798cb
Pastebin.com -> https://pastebin.com/7uPxzcKG
*/
namespace MyNamespace {
    class MyClass {
        static void Main(){
            Console.Write("Please enter an integer: ");
            string sNum = Console.ReadLine();
            int iNum = Int32.Parse(sNum);
            Console.WriteLine("You entered: {0}", iNum.ToString());
        }
    }
}